Convert PDF to PDF/A Archival Format Online Free
Convert a standard PDF to PDF/A — the ISO archival format required by courts, governments, and banks.
How to Convert PDF to PDF/A in 3 Steps
- Upload your PDF. Drag and drop or browse for the standard PDF you need to convert to the archival PDF/A format. Most PDFs convert without any issues.
- Click "PDF to PDF/A". PDFTools attempts PDF/A-2b conversion first (widely accepted and more permissive), then automatically falls back to PDF/A-1b if needed for compatibility with stricter requirements.
- Download your PDF/A file. Your archival-format PDF is ready to download. It can now be submitted to government agencies, courts, banks, and other institutions that require the PDF/A standard.
Why Use PDFTools to PDF to PDF/A?
- PDF/A-2b and PDF/A-1b support — Automatically selects the most appropriate PDF/A level for your document — PDF/A-2b where possible, with PDF/A-1b fallback for maximum compatibility.
- Required by courts and governments — Many courts, banks, government agencies, and universities worldwide require documents to be in PDF/A format for official submissions and long-term archiving.
- Self-contained documents — PDF/A embeds all fonts, color profiles, and resources inside the file, ensuring it displays identically on any system now and in the future.
- Free without sign-up — Convert PDFs to the archival standard for free. No account needed, no watermarks added, no file stored after processing.
Frequently Asked Questions
What is PDF/A and why is it required?
PDF/A is an ISO standard (ISO 19005) for archiving and preserving digital documents long-term. It requires all fonts, color spaces, and resources to be embedded within the file so the document remains renderable without external dependencies. Courts, government agencies, banks, and universities often require PDF/A to ensure documents remain accessible for decades.
What is the difference between PDF/A-1b and PDF/A-2b?
PDF/A-1b is the original, strictest version — widely supported but has limitations with features like transparency and JPEG2000 images. PDF/A-2b is newer, allows more modern features, and is accepted by most institutions. PDFTools tries PDF/A-2b first and falls back to PDF/A-1b automatically.
My PDF failed to convert to PDF/A — what should I do?
Some PDFs with encryption, DRM, or advanced proprietary features cannot be directly converted to PDF/A. Try removing any password protection first using the Unlock PDF tool, then attempt the conversion again. Heavily complex PDFs with many special features may require professional archiving software for full compliance.